Device for the drawing upon forms, of articles to be finished, such as stockings and other hosiery goods



ISHED,

y 11, 1939- P. HELIOT DEVICE FOR THE DRAWING UPON FQRMS. OF ARTICLES TO BE FIN SUCH AS STOCKINGS AND OTHER HOSIERY GOODS Filed NOV 14 1936 2 Sheets-Sheet 1 gwum vfo'o e'on fHZzbZ'.

July 11, 1939. p HELIOT 2,166,053 DEVICE FOR THE DRAWING UPON FORMS, OF ARTICLES TO BE FINISHED,

SUCH AS STOCKINGS AND OTHER HOSIERY GOODS Filed Nov. 14, 1936 2 Sheets-Sheet 2 arm um 73 9 PF .ZlonPHeiZz'ot moi/yam;

Patented July 11, 1939 UNITED STATES DEVICE FOR THE DRAWING UPON FORMS, OF ARTICLES TO BE FINISHED, SUCH AS STOCKINGS AND OTHER HOSIERY GOODS Lon Pierre Hliot, 'Sainte-Savine, France Application November 14, 1936, Serial No. 110,903 In France November 15, 1935 5 Claims.

It is necessary, during the finishing or the sizing of at numerous class of articles, to stretch the fabric so as to avoid all irregularities, and in certain cases, for instance with articles sold in pairs such as stockings, these must be given the desired length, for instance the same length, in the case of articles in pairs.

These results are obtained by the process of drawing the articles upon forms, thus leading to a regular elongation of the meshes constituting the fabric.

Hitherto, tlus drawing has always been effected by hand, either by simply attaching the ends of the articles to projections provided in the form, or by the use of frames which are movable at will along the form and can be fixed in any desired position upon the latter, or again, by the use of rubber rings engaged upon the form.

It will be observed that such methods of manual operation are not practical. They require special work and attention on the part of the operator. Errors may readily arise; the tension of the different parts of the fabric is irregular, and the ends of the article may even show curved parts. Again, the operative yield of the drawing, upon which latter the yield of the entire finishing process depends, is not satisfactory.

The present invention has for its object to obviate these drawbacks, by the use of a device by which the articles to be finished are drawn upon forms, which device is chiefly characterized by the fact that the drawing operation is automatically performed by parts which are adapted to draw the fibres of the fabric while moving along the form and thus drawing out the fabric of the said article to the required length.

The article is moistened to advantage, and preferably during the drawing operation itself, so that it will adhere to the form when it has attained the desired dimensions.

The said device preferably forms part of a finishing machine adapted to operate upon successive forms and so arranged that the forms will come in succession before the drawing device and that the mechanism for the forward travel of the forms shall be combined with the drawing mechanism.

Further characteristics of the invention will be set forth in the following description, with reference to the accompanying drawings.

Fig. 1 is an elevational view of a constructional form of a drawing device in accordance with the invention, adapted for the drawing of stockings upon fiat forms; in this figure, the jaws are in their initial position, and are just commencing to open.

Fig. 1a is a view of the various detached members in their respective positions.

Fig. 1b shows a modified construction.

Fig. 2 is a view of the device shown in Fig. 1

but with the parts in the position they assume just before the commencement of the drawing operation, the open jaws being ready to seize the article.

Fig. 3 shows the final active position of the jaws, at the end of the drawing operation.

Fig. 4 is a plan View of the device shown in Figs. 1, 2 and 3.

With reference to the drawings, the device comprises two jaws la and lb which are faced with any suitable adhesive material and can be applied against each form F when it comes in turn between the jaws.

The said jaws are pivoted at 2 to' a frame 3 which is slidable upon uprights 4, on the one hand by a long sleeve 5, and on the other hand by a roller 6. This arrangement provides for a certain flexibility in the aggregate of the uprights, and for a good pressure of the jaws, in spite of any possible distortion of the forms.

The frame 3 is balanced by a counterweight 1, and a second counterweight 8 tends to lower the frame.

The counterweight 8 is mounted on the end of a lever 9 which is pivoted at Ill and is actuated, through a roller II, by a cam l2 which is keyed to a driving shaft [3.

To the lever 9 are pivoted the respective ends of two links M whose other ends are pivoted to respective appendages l5 of the jaws l. The pivoting points of the links are such that the vertical movement of the lever will first cause the opening of the jaws (Fig. 1) and then a further upward movement will cause a lifting of a frame 3 to the desired position (Fig. 2).

The said frame comprises arms l6 provided with eccentric rollers H which serve to regulate and to limit the movement of the appendages l5 of the jaws and hence to prevent an excessive pressure of the jaws upon the forms, which would prevent the article held by the jaws from sliding along the form.

The frame 3 is downwardly extended by an appendage I8 co-operating with a stop sleeve 19 which is mounted upon a support 20 and is adjustable in height.

The operation of the drawing device is as follows.

A stocking having been drawn into place on a form F (at the end of the preceding operation), the device is now in the position shown in Fig. 3, with the jaws closed.

The cam is out of contact, or at most, it is only in contact at the point a. (Fig. 3), and then the part cab of the outline of the cam will cause the jaws to open, as shown in Fig. 1 which corresponds to the point 22. The links I4 are now practically in line with the appendages I 5 of the jaws, and make contact with collars 2| mounted on .the axles of the jaws. The part cd of the cam corresponds to the rise of the frame 3, together with the jaws, to the upper position (Fig. 2). The jaws remain open as far as the point d, and at this time the form F has come into the operating position. During the stroke do, the jaws close upon the stocking, which has already been placed completely upon the form and then raised to permanent indicating mark on the form, corresponding to the maximum upper position of the jaws. The weight 8 then acts in order to lower the whole aggregate by a slow motion, the fabric being drawn by the jaws along the form, against which it is closely and quite regularly applied. The force of the drawing action can be easily regulated .by the position of the weight 8 on the lever 9. The

length of the article, should this be obligatory, is determined by adjusting with the stop sleeve IS. When the jaws are again opened the form thus operated upon will move forward to give place to the next form.

The modification indicated in Fig. lb shows the means which can be used for compensating any lack of parallelism between the axis of and the path of movement of the common pivoting point of the links M. For this purpose, the said links are secured to a pivoted device 5i cooperating with a member 5! having a definite curvature. When descending with the said links, the device 553 can pivot about, thus compensating by the position of the links i l, the lack of parallelism between the axis of ii and the path described by the pivoting point 52.

In order that the treated article may maintain the position and the length which was given to it upon the form, it is necessary that the fabric should be moistened either before placing it upon the form, or upon the form itself, in order to obtain the proper adhesion and/or a reduction of the elasticity of the fibres. As the bottom part of the article under treatment is usually strengthened, it will follow that the adhesion at this point will subsist until the top part is completely dried, thus preventing all shrinkage.

The moistening can be effected in any suitable manner, for instance by direct wetting, by spraying, or the like. This can be done before the form reaches the drawing device, but it is preferable to operate by a spraying concurrently with the drawing.

For this purpose, it is feasible to mount along the form a set of sprayers 22 (Fig. 3) which might be secured to the frame 3, and these sprayers will discharge at the proper time, by the use of cocks under the control of cams suitably mounted on the shaft H3.

The present device is capable of considerable modification and all modifications or changes thereto which come within the scope of the attached claims are considered part of the present invention.

What I claim is:

1. A device for the drawing upon forms of articles to be finished, such as stockings or other hosiery goods, comprising a vertically movable frame, means giving said frame a vertical reciprocation, a pair of arms pivotally mounted on said frame with one arm on each side of said form, means giving said arms a desired pivotal movement, a pair of jaws pivotally mounted on said frame and each pivotally actuated by one of said arms for pressing against said article upon the form and a pair of lateral arms each mounted on said frame in such a manner as to limit the movement of one of said first mentioned arms for regulating the pressure of said jaws against said article.

2. A device for the drawing upon forms of articles to be finished, such as stockings or other hosiery goods, comprising a pair of uprights, a frame, a sleeve connected to said frame and sliding upon one of said uprights, a counterweight connected to said sleeve in such a manner as to counterbalance the weight upon said sleeve, a roller rotatably mounted on said frame and running upon the second of said uprights for giving a flexibility to the guiding of said frame, means giving said frame a vertical reciprocation, a pair of arms pivotally mounted upon said frame and a pair of jaws pivotally mounted upon said frame and each pivotally actuated by one of said arms for pressing against said article upon the form.

3. A device for the drawing upon forms of articles to be finished, such as stockings or other hosiery goods, comprising a vertically movable frame, means for giving said frame an upward vertical movement, a pair of arms pivotally mounted on said frame with one arm on each side of said form, a pair of links each connected to one of said arms, means giving said links a given vertical reciprocation, a pair of jaws pivotally mounted upon said frame and each pivotally actuated by one of said arms for pressing against said article upon the form and a pair of lateral arms each mounted on said frame in such a manner as to limit the downward movement of said first mentioned arms for limiting the pressure exerted by said jaws on said article and simultaneously thereby effecting a downward movement to said frame.

4. A device for the drawing upon forms of articles to be finished, such as stockings or other hosiery goods, comprising a vertically movable frame, means for giving said frame an upward vertical movement, a pair of arms pivotally mounted on said frame with one arm on each side of said form, a pair of links each connected to one of said arms, a rod having said links pivotally connected to an intermediate point thereon, a weight upon one end of said rod, said rod being pivotally mounted at its opposite end, a cam having said rod bearing thereon being suitably profiled to cause said links a desired vertical reciprocation, means rotating said cam, a pair of jaws pivotally mounted upon said frame and each pivotally actuated by one of said arms for pressing against said article upon the form, and a pair of lateral arms each mounted on said frame in such a manner as to limit the downward movement of said first mentioned arms for effecting a downward movement of said frame.

5. A device for the drawing upon forms of articles to be finished, such as stockings or other hosiery goods, comprising a vertically movable frame, means giving said frame a vertical reciprocation, a rod mounted upon the lower side of said frame, an adjustable means for stopping the downward movement of said rod at a desired point, a pair of arms pivotally mounted on said frame with one arm on each side of said form, means giving said arms a desired pivotal move ment, a pair of jaws pivotally mounted on said frame and each pivotally actuated by one of said arms for pressing against said article upon the form and a pair of lateral arms each mounted on said frame in such a manner as to limit the movement of one of said first mentioned arms for regulating the pressure of said jaws against said article.

LEON PIERRE HELIOT. 

